Carlos Enrique Alegria, 27, of Johnson City, was in court on Friday after Sheriff's deputies told us he raped a woman on Cash Hollow Rd. on Thursday.

Alegria is being charged with aggravated rape and resisting arrest.

He's in jail and bond is set at $50,000. Alegria is not allowed to have contact with his accuser, who we're told is an acquaintance.

Alegria will have a preliminary hearing on December 17, 2013. The court has appointed him a public defender.

FAST FACTS

Carlos Enrique Alegria in court on Friday

Charged with aggravated rape and resisting arrest

Authorities say alleged victim is acquaintance

911 dispatchers used interpreter and GPS to track call

We talked to Washington County dispatchers who helped a deputy intervene in the attack.

The Washington County Sheriff's Office told us Deputy Darrell Collins found the rape in progress in a car on the side of the rode.

We're told the victim called 911 shortly before the deputy arrived.

Washington County dispatch told us they heard a conversation in Spanish when they picked up the phone at 3:20 a.m., so they had to bring in an interpreter.

"We use a service called LanguageLine and we basically conference LanguageLine in with the caller and 911 operator," said Randall Lewis, the assistant director at Washington County Emergency Communications District.

The interpreter told them it sounded like a woman was being assaulted, said Lewis.

Dispatchers pulled up another tool to find out exactly where the call was coming from.

"Most of your newer phones have a GPS locator in them," Lewis told us. "Based on the phone and the wireless carrier's network, it allows us to get the latitude and longitude of where the phone is."

Authorities told us the deputy was at the scene in time to keep the alleged rape from going further.

"I've never had it happen before," said Ed Graybeal, the Washington County Tennessee Sheriff.

Graybeal told us this is the first time in his 34-year career they've been able to stop an alleged assault like that.

He said the GPS technology and interpreter may have saved the woman's life.

"In my mind, and only my mind, I can't prove this, I don't know if she would've lived through the encounter," Graybeal told us.

Dispatchers said that if you find yourself in a threatening situation, you should call 911 and leave the line open like this woman did.

Studies from the Pew Research Center show that 70% of all 911 calls come from wireless phones.

Victim recovering

We're told the woman is now recovering from the incident.

Graybeal said she hasn't given her side of the story yet. He told us she speaks little English, or none at all, so they will bring in an interpreter for her to make her statement. Graybeal said they will do that in a few days, once she's recovered.